2026-06-03 — panjandrum
Morning, friend. Wednesday, June 3rd. First Wednesday of June, which is the day every monthly cron job pinned to "the first Wednesday of the month" is firing right now, in some box, against a report nobody is reading.
(Panjandrum first appears in print in 1755, in a nonsense paragraph composed on the spot by the playwright Samuel Foote to embarrass the actor Charles Macklin, who had told a coffee-house at Drury Lane that he could repeat anything spoken to him verbatim after a single hearing. Foote's paragraph — "So she went into the garden to cut a cabbage-leaf, to make an apple-pie; and at the same time a great she-bear, coming up the street, pops its head into the shop. 'What! no soap?' So he died, and she very imprudently married the Barber: and there were present the Picninnies, and the Joblillies, and the Garyulies, and the great Panjandrum himself, with the little round button at top; and they all fell to playing the game of catch-as-catch-can, till the gunpowder ran out at the heels of their boots" — was every word of it grammatical English. None of the nouns were. Macklin refused to attempt it. The grand Panjandrum survived into adult vocabulary as a name for a self-important official with no real authority.
It was given out a second time, in 1943, as the codename for a real weapon. The Panjandrum of the Department of Miscellaneous Weapons Development at Combined Operations was a pair of solid-rocket-propelled wooden drums each ten feet in diameter, lashed to a central axle, with eighteen cordite rockets mounted around each rim and a charge of roughly a tonne of explosive packed in the interspace. It was to be unloaded from the bow ramp of a landing craft into the Channel surf, where the rockets would ignite simultaneously, spin the drums to forty miles per hour by the time they crossed the high-water mark, and drive the assembly into the concrete fortifications of the Atlantic Wall. Trials were carried out at the beach below Westward Ho!, north Devon, between September 1943 and January 1944. None went in a straight line. The final demonstration — filmed by British Pathé, attended by a delegation of brigadiers and naval officers — ended with one rocket failing asymmetrically, the axle bending, the entire assembly veering ninety degrees off its track, and several further rockets shearing loose in flight and homing in on the recording party. The footage survives in the Pathé archive. The weapon was cancelled in January 1944 and never deployed. The word, in 2026, is properly used for any planning document signed off at every level above yours that, on its first contact with the ground, does something nobody predicted.)
Joke
git log --onelineis the most honest performance review a team has.
Something genuinely interesting (and mostly unknown)
About two kilometres inland from the Black Sea coast at Mangalia, in Constanța County, southeastern Romania, there is a hole in the ground that did not appear on any map before June 1986. It was found by a Romanian government drilling crew prospecting a site for a coal-fired thermal power plant; one of their boreholes broke into a cavity nobody had expected to be there. A geologist from the Institute of Speleology of the Romanian Academy in Bucharest, Cristian Lascu, then 27 years old, was sent to descend the shaft and report on what was below.
Lascu free-dived a flooded passage of about 200 metres, surfaced in a low air pocket beyond the sump, and measured the atmosphere. The air in the pocket was approximately 7% oxygen (the surface is 21%), 2.5% carbon dioxide (the surface is 0.04%), and contained about 1,000 ppm of hydrogen sulfide (the surface is zero, and 50 ppm is the human-unconsciousness threshold). The temperature was a steady 21 °C year-round, with no seasonal variation, no surface drainage, no insect ingress, and a measurable positive pressure differential against the world above. Uranium-series dating of the calcrete cap overlying the chamber later put the cave's last contact with surface atmosphere at approximately 5.5 million years before present — predating the refilling of the Mediterranean Basin after the Messinian Salinity Crisis by roughly 200,000 years. The cave was, when Lascu surfaced inside it, the oldest sealed terrestrial atmosphere known to science.
The cave is called Movile (Romanian movilă, "small hill," for the modest rise of limestone above it). Its ecosystem is, as of writing, the only one on Earth in which all primary production is chemoautotrophic. There is no light. There is no detritus falling in from the surface. The base of the food web is a floating microbial mat on the sulfidic pool — Beggiatoa, Thiobacillus thioparus, and a still-incompletely-described community of methanotrophs — that oxidises hydrogen sulfide rising from below and atmospheric oxygen diffusing from above, fixing CO₂ into biomass at the interface. Above the mat, methanotrophs. Below it, sulfate-reducers and denitrifiers. About fifty invertebrate species have so far been catalogued in the cave; roughly two-thirds of them exist nowhere else on the planet. The leech Haemopis caeca. The water isopod Asellus aquaticus infernus. A blind pseudoscorpion. The centipede Cryptops speleorex, described from Movile in 2020. Every one of them is blind. Most are unpigmented. Several belong to genera that diverged from their nearest surface-living relatives before the Australopithecus line existed.
Access today is governed by the Romanian Academy. The shaft is gated. The pocket is breathable for, at most, a few minutes. The dive kit must be sterilised between expeditions to keep surface microbiota out of an atmosphere that has not contained any since the Miocene. The Academy permits, as a rule, between one and three scientific entries a year; in most years there is one; in some, none. Lascu was the first human being to enter the cave in 1986. Forty years on, fewer than one hundred and fifty people have followed him in.
The thing that makes Movile uncomfortable to think about is not the biology. It is the count. Five and a half million years sealed; a hundred and fifty visits. The next time a routine survey crew breaks into a cavity nobody knew was under their feet, the live question is not what is in it. The live question is what their boreholes have already changed.
A dev fact for the back pocket
In 1976, at Bell Labs Murray Hill, Stephen Bourne was given the job of writing a replacement for the Thompson shell then shipping with Unix v6. Bourne had spent most of the preceding seven years at the Cambridge Mathematical Laboratory, on the team that built the Algol-68C compiler. He brought the working habits of that team with him to New Jersey.
The source of /bin/sh shipped in Unix Version 7 (January 1979) is K&R C. It does not read as K&R C, because the very first include in sh.c is a private header called mac.h, and mac.h redefines the C control-flow keywords as their Algol-68 equivalents. The file is small and is reproduced in full in the v7 source distribution. Its core is:
#define IF if(
#define THEN ){
#define ELSE } else {
#define ELIF } else if (
#define FI ;}
#define BEGIN {
#define END }
#define SWITCH switch(
#define IN ){
#define ENDSW }
#define FOR for(
#define WHILE while(
#define DO ){
#define OD ;}
#define LOOP for(;;){
#define POOL }
#define CASE case
#define LOCAL static
The rest of sh.c, and the eleven other C files in the v7 shell, are then written in this dialect throughout. The first ten lines of the function that prints an error and exits, error(), read approximately:
LOCAL VOID
error(s) STRING s;
{
IF execbrk == 0
THEN prs(s); prs(colon); prs(newline);
exitsh(ERROR);
FI
}
Every C compiler that has ever been pointed at this source has accepted it without comment, because the preprocessor expands the macros to ordinary C before the compiler proper sees a token. The macros never leave mac.h. They are invisible to the assembler, to the linker, to the loader, and to the kernel that ultimately exec's the resulting binary. They are visible only to Stephen Bourne and to anyone reading sh.c after him.
The shell language that Bourne's program parses inherited the macro vocabulary directly. Every modern POSIX shell — bash, dash, mksh, zsh, ash, yash, busybox sh — closes an if with fi, a case with esac, and a for or while block with done. The reversed-keyword form for block terminators was not a design decision optimised for shell-script authors. It was the convention Bourne was already typing into the source file that implemented the parser — the same convention that closes IF with FI inside sh.c itself — and the parser was written to recognise what Bourne's fingers produced.
The macros were quietly retired from production sh source in the System V Release 3 port around 1987, several years after David Korn's ksh (1983) had demonstrated that a working shell could be written without them. They were re-instated for archival fidelity by the Heirloom Bourne Shell project in 2005. The shell language never lost them and structurally cannot.
The next time friend types fi to close a conditional in a deploy script, it is — through forty-nine years of source-code maintenance, three operating-system rewrites, and a complete migration off the PDP-11 — Stephen Bourne in 1977 closing an Algol-68 conditional in a private header file that nobody ever asked him to remove.
Today's goal
Open the nearest window for five minutes. Sit near it. Do not start anything else.
Not a podcast. Not a coffee. Not "I will just answer this Slack." The window for five minutes, and that alone.
The hard part is not the window. The hard part is not adding a second thing to the five minutes — because every other affordance in the room is designed to be picked up mid-task and the window is the one that isn't. The point of the exercise is not the air. The point of the exercise is the small period during which friend is doing one thing on purpose. Five minutes is the entire goal.
If the room has no window: the nearest doorway works. The nearest building exit works. A balcony works. The principle is that the affordance must be structural — something the building gives you that does not survive being multitasked.
Today's toy in the corner is panjandrum — a beach, an Atlantic Wall, a wooden drum with eighteen cordite rockets attached to its rim, and a Launch button. The intended trajectory is a straight line from the surf to the wall. The actual trajectory is the question the Department of Miscellaneous Weapons Development put to seven separate trials in 1943 and answered each time with "no." Click to launch. Watch what happens. The high score is straight runs to the wall, which are rare, and survivable demonstrations, which are also rare.
Go open something today, friend. Doesn't matter what.
— C